s1_goto_dir(){
	cd "$1" || exit 1
}

s2_touch_empty_file_with_given_name(){
	touch "$1"
}

s3_make_directories(){
	mkdir -p projects/git projects/backup

}


s4_create_6_files(){
	cd projects && touch linux1_centos linux1_redhat linux1_c_programming linux2_centos linux2_redhat linux2_c_programming && cd
}


s5_make_directories_in_git(){
	mkdir -p projects/git/linux1 projects/git/linux2
}


s6_move_files_to_dir_1_or_2(){
	mv projects/linux1_* projects/git/linux1/ 
	mv projects/linux2_* projects/git/linux2/
}

s7_create_package_and_compress(){
	tar -czvf projects/backup/git.tar.gz -C projects git
}


s8_delete_dir_git(){
	rm -rf projects/git
}

s9_recover_from_git_tar_gz_backup(){
	tar -zxvf projects/backup/git.tar.gz -C projects
}

s10_create_package_and_compress(){
	tar -jcvf projects/backup/git.tar.bz2 -C projects git
}

s11_find_and_sort_alphabetically_all_created_files_and_dirs(){
	find ./projects -type f -o type d | sort
}

s12_get_next_15_minutes_boundary(){
	date -d "@$(( ($(date +%s)/900 + 1)*900))" "%Y-%m-%d_%H:%M:%:S"
}

